Method and apparatus for coating a moving web of paper or paperboard using a controlled coating jet
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United States of America Patent
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Feb 20, 2001
Grant Date -
N/A
app pub date -
Oct 24, 1997
filing date -
Oct 28, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and assembly for coating a moving web of paper or paperboard by means of a coating mix jet which is directed to the surface of the web without mechanical support. The present invention is based on applying a desired amount of the coating mix to the web via a narrow-gap slit orifice, and by measuring the coat weight on the web, adjusting the position of at least one lip of the slit orifice to achieve the desired weight and cross-machine profile of the applied coat.
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